<template>
  <div id="app">
    <Header class="visible-lg-block visible-md-block"></Header>
    <router-view />
  </div>
</template>

<script>
import Header from '@/components/header/Header'
export default {
  name: 'App',
  components: {
    Header
  },
  created() {
    // 在页面加载时读取sessionStorage里的状态信息
    if (sessionStorage.getItem('store')) {
      this.$store.replaceState(
        Object.assign(
          {},
          this.$store.state,
          JSON.parse(sessionStorage.getItem('store'))
        )
      )
    }

    // 在页面刷新时将vuex里的信息保存到sessionStorage里
    window.addEventListener('beforeunload', () => {
      sessionStorage.setItem('store', JSON.stringify(this.$store.state))
    })
  }
}
</script>


<style lang="less">
@import './styles/reset.less';
</style>